diff --git a/ArduCopter/ReleaseNotes.txt b/ArduCopter/ReleaseNotes.txt
index 395c13522f..032f2f7d81 100644
--- a/ArduCopter/ReleaseNotes.txt
+++ b/ArduCopter/ReleaseNotes.txt
@@ -1,5 +1,11 @@
 ArduPilot Copter Release Notes:
 ------------------------------------------------------------------
+Copter 4.0.6-rc2 16-Jan-2021
+Changes from 4.0.6-rc1
+1) Add support for keeping a backup of storage for last 100 boots
+2) Bug fixes:
+    a) Fix support for BLHeli_S passthru
+------------------------------------------------------------------
 Copter 4.0.6-rc1 23-Dec-2020
 Changes from 4.0.5
 1) Bug fixes: